Earth-auger



(No Model.)

7 W. BRENNER.

EARTH AUGER. '1

No. 256,457; Palfented Apr.18,1882

Fig. .2

UNITED STATES PATENT OFFICE.

WILLIAM BRUNNEB, OF NORTH LEWISBURG, OHIO EARTH-'A'UGER.

SPECIFICATION forming part of Letters Patent No. 256,457, dated April18, 1882. Application filed January 20, 1882. (No model.)

To all whom it may concern Be it known that I, WILLIAM BRUNNER, acitizen of the United States of America, residing at North Lewisburgfin'the county of Champaign and State of Ohio, have invented certain new anduseful Improvements in Earth-Augers; and I do hereby declare thefollowing to be be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

My invention relates to that class of earthangers which comprise ascrew-threaded handle and a cross-bar adapted to receive the handleandsupport the plates and blades of the auger; and my invention consists inthe combination of elements hereinafter more fully described, andspecifically set forth in the claim.

I Figure 1 is a perspective of the cross-bar and plates constructed inaccordance with my invention, and Fig. 2 is a front or side elevation ofthe complete auger. Fig. 3 is a top view of the cross-bar and plates.

Like letters of reference indicate like parts in all the figures.

A represents the handle,"screw-threadedat a to adapt it for attachmentto the bar B, the aperture b in which is also screw-threaded, and

thus adapted to receive the pointed end a of handle A, and by means ofthe screw-threads to be securely attached thereto.

To the bar B, by rivets or bolts 0 c, are secured two plates, 0 0, eachof which is a little more than a half-disk or semicircular in outline,the excess or portion beyond the diametrical line being at the centerremoved in order that the remaining portions thereof may be bent upwardat one side of said center to form a blade, d, anddownward at the otherside of said center to form a blade, d. The inner ends of the bladeswhich incline upward abut against the sides of the cross-bar, thusrendering its I attachment thereto more firm against displacementduringits operation in boring in the earth. In other words, the liability totwist the blades against the bar.

upon the bar is prevented by the screws, and these are greatly assistedby said abutment of In like manner blades 0 e of plate 0 are formed. Theopposite blades of each plate are disposed in upward and downwarddirections relatively to each other, but parallel throughout theirlengths, and are disposed in parallel diametric lines, and areseparated, so that there is an open space extending entirely across theauger, and neither blade overlaps the opposite blade, as clearly shownin the drawipgs, and thus is constructed and arranged what may be termeda double-bitted and reversible-bladed auger, for in operation itiscapable of being used with either of the blades d and e at thebot-tom orthe blades d and e, the direction of movement being from left to right,as is usual in this class of implements, whereby when one set of bladesbecomes dull the user has simply to unscrew the handle and turn over theplates and bar without removing the plates from the bar, and

screw the handle into the bar again, when the constant action of theearth thereon, and so they are fitted for use at the" bottorn'again.Each blade also is of such shapethat it may be reversed independently ofthe other and of the bar.

I do not broadly claim a reversible anger; but

What I claim as new, and wish to secure by Letters Patent, is-

In an earth-auger, the combination of the screw'threaded and pointedhandle A, the bar B, and the plates 0 O, the blades of which aredisposed in slanted parallel lines, with the inner ends of thoseinclined upward abutting against the bar, substantially as shown anddescribed.

In testimony whereof I have affixed my signature in presence of twowitnesses.

. WILLIAM 'BRUNNEB. Witnesses:

H. G. PARTRIDGE, A. D. PALMER.

